Hi, I’ve used two different Pixhawk 4 boards and both couldn’t connect to the PC after just a bit of usage.
The red and green led are solid, while the blue one is blinking.
The pixhawk also heats up extremely fast.
This is a recurring issue that is extremely infuriating, and I bought the pixhawk from the holybro website.
Developers, do provide a solution, or at least any remedial actions.

I’m experiencing similar issues on new holybro board as well.
Trying to reload the bootloader I get a “Low Voltage on target error”. Seems like the chip is not even powered. It would be nice to receive a feedback from holybro on that